package demo1;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.IOException;
@WebServlet("/register.do")
public class user extends javax.servlet.http.HttpServlet {
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        resp.setContentType("text/html; charset=UTF-8");
        String username = req.getParameter("username");
        String password = req.getParameter("password");
        if(username.length()==0 && password.length()==0){
            resp.getWriter().println("注册失败，用户名及密码均为空");
        }
        if(username.length()!=0 && password.length()==0){
            resp.getWriter().println("注册失败，密码为空");
        }
        if(username.length()==0 && password.length()!=0){
            resp.getWriter().println("注册失败，用户名为空");
        }
        if(username.length()!=0 && password.length()!=0){
            resp.getWriter().println("注册成功");
        }
    }
}

